Valve



C. W. LARNERL VALVE.

APPLICATION FILED DEC-6, 1917.

Patented Mar. 1, 1921.

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cn ssrnaw. firemen, or oLnvn'LANn, .orrro.

VALVE.

T 0 all whomit may concern:

Be it known that I, CHESTER W. LAB-NEH, a citizen or" the United States,residing at Cleveland, in the county of ()uyahoga and State of Ohio,have invented certain new useful Improvements in Valves. of wh ch the ofconvenience in the fitting, assemblage and mounting of the parts, isformed of chambered sections 5, 6 and 7, which have screw threadconnection, as indicated. 7

The section 6 has a centrally apertured diaphragm or partition 8, theaperture constituting a valve-way and having its bottom wall providedwith a ground seat 9. A

valve 10 is fitted to the seat and its spindle 11 is provided withadjustable weights 12 and with a bail or lifting ring'13. A plate 14closes the section 6 and forms an inclosed space or chamber above thevalve 10, which has a waste-way 15.

Section 7 is provided with superposed seats 16 and 17 to accommodate adouble disk valve 18. The smaller disk 19 establishes anddis-establishes flow between ports 20 and 21, and the larger disk 22forms with the surrounding walls a chamber 23 below the weighted or dropvalve 10. Chamber 23 communicates through a port 24 with a source ofpressure not shown. When the pressure in chamber 23 is reduced to .the

point for which valve 10 is weighted. the latter drops and the pressurein said chamber is discharged through the waste-way 15. At the same timethe double valve 18, which has been held to its respective seats by thepressure in chamber 23. rises due to the pressure on the bottom disk 19.The result of this is that water or other fluid flowing from port 20 isdischarged through the waste port 21.

It is evident that this device is operative irrespective of what thepressures at 20 and 23 may be because the ratio of areasat top andbottom of valve 18 may be varied to suit any individual case. Forexample, if

v Specification of Letters Patent. Pa ten-trad"Ria 1, 1921 Applicationfiled December 6 1917. Serial No. 205,723;

' thelp ressure below the disk 19 is forty pounds per square inch and itis desired to discharge this water as soon as the pressure at some otherpoint shall be reduced to ten pounds per square inch, itis onlynecessary;

to.have the'eftectivearea of the larger disk a little more than fourtimes-the area. of the smaller disk.

The above described device is capable of many applications. However theinlet 24 may be connected with a sprinkler system at a point where adrop below a given pressure shall operateto close a main supply valvecontrolled by discharge of pressure from 20 to 21. Both 15 and 21 aredesignated waste connections because their principal function is todischarge pressure, but this they do from diiierentchambers.

It willbe obvious to those skilled in theart to which the inventionrelates that changes and modifications may be made without departingfrom the spirit and scope thereof. Hence the invention is not limitedother than required by the state of the prior art.

Having described the nature and object of the invention, I claim 1.Apparatus of the character specified,

comprising- 2 pressure chamber with supply and waste connections, avalve intermediate said connectionsand adapted to be unseated inresponse to a predetermined reduction in pressure and having means formanual oper-' mally held to its seat by. the pressure in said chamber.

' 2QApparatus of the character specified,

comprising a pressure chamber with supply and waste connect1ons,a dropvalve intermediate said connections and adapted to be unseated inresponse to a predetermined reduction in pressure and having means formanual operation, and an auxiliary valve for controlling fluid flowthrough other inlet and outlet connections with which it is provided andnormally held to itsseat by the pressure in said chamber.

3. Apparatus of the. character specified, comprising a pressure chamberwith supply and waste connections, a weighted. valve having a groundseat intermediate said connections and adapted to be unseated inresponse to a predetermined reduction in pressure, fluid supply andwaste connections, and

a valve for the same including disks of different area 'WllGI'GOf thelarger is exposed to the pressure in said chamber.-

4-. An apparatus of the character specified Comprising the combinationof a casing having a pair of pressure chambers each having independentsupply and vvaste connections, a valve chamber between said pressurechambers, an unbalanced double disk valve arranged in said valve chamberand having one disk smaller thanthe other, the latter being in saidvalve chamber and cooperating with the inlet of one of said pressurecham-- hers, a partition having a valve seat, and arranged in the otherof said pressure chambers between its inlet and waste, and a Weightedvalve for the last mentioned valve 7 seat, substantially as described.

5. Apparatus of the character specified comprising in combination apressure chamber having supply and Waste connections, a Weighted valveintermediate said connections and adapted to be unseate'd in response toa predetermined reduction in pressure in said chamber, main fluid supplyand Waste connections, and an auxiliary valve one end of Which controlsthe last named connections and the other end of which is exposed to theinterior of said chamber, substantially as described. 7

- In testimony whereof I afiix my signature.

CHESTER W. LARNER.

